Tuning giant anomalous Hall resistance ratio in perpendicular Hall balance

J. Y. Zhang; G. Yang; S. G. Wang; J. L. Liu; R. M. Wang; E. Amsellem; A. Kohn; G. H. Yu

doi:10.1063/1.4918372

Tuning giant anomalous Hall resistance ratio in perpendicular Hall balance

J. Y. Zhang, G. Yang, S. G. Wang^*, J. L. Liu, R. M. Wang, E. Amsellem, A. Kohn, G. H. Yu

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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Abstract

Anomalous Hall effect at room temperature in perpendicular Hall balance with a core structure of [Pt/Co]₄/NiO/[Co/Pt]₄ has been tuned by functional CoO layers, where [Pt/Co]₄ multilayers exhibit perpendicular magnetic anisotropy. A giant Hall resistance ratio up to 69900% and saturation Hall resistance (R_S^P) up to 2590 mΩ were obtained in CoO/[Pt/Co]₄/NiO/[Co/Pt]₄/CoO system, which is 302% and 146% larger than that in the structure without CoO layers, respectively. Transmission electron microscopy shows highly textured [Co/Pt]₄ multilayers and oxide layers with local epitaxial relations, indicating that the crystallographic structure has significant influence on spin dependent transport properties.

Original language	English
Article number	152401
Journal	Applied Physics Letters
Volume	106
Issue number	15
DOIs	https://doi.org/10.1063/1.4918372
State	Published - 13 Apr 2015
Externally published	Yes

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title = "Tuning giant anomalous Hall resistance ratio in perpendicular Hall balance",

abstract = "Anomalous Hall effect at room temperature in perpendicular Hall balance with a core structure of [Pt/Co]4/NiO/[Co/Pt]4 has been tuned by functional CoO layers, where [Pt/Co]4 multilayers exhibit perpendicular magnetic anisotropy. A giant Hall resistance ratio up to 69900% and saturation Hall resistance (RSP) up to 2590 mΩ were obtained in CoO/[Pt/Co]4/NiO/[Co/Pt]4/CoO system, which is 302% and 146% larger than that in the structure without CoO layers, respectively. Transmission electron microscopy shows highly textured [Co/Pt]4 multilayers and oxide layers with local epitaxial relations, indicating that the crystallographic structure has significant influence on spin dependent transport properties.",

author = "Zhang, {J. Y.} and G. Yang and Wang, {S. G.} and Liu, {J. L.} and Wang, {R. M.} and E. Amsellem and A. Kohn and Yu, {G. H.}",

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T1 - Tuning giant anomalous Hall resistance ratio in perpendicular Hall balance

AU - Zhang, J. Y.

AU - Yang, G.

AU - Wang, S. G.

AU - Liu, J. L.

AU - Wang, R. M.

AU - Amsellem, E.

AU - Kohn, A.

AU - Yu, G. H.

PY - 2015/4/13

Y1 - 2015/4/13

N2 - Anomalous Hall effect at room temperature in perpendicular Hall balance with a core structure of [Pt/Co]4/NiO/[Co/Pt]4 has been tuned by functional CoO layers, where [Pt/Co]4 multilayers exhibit perpendicular magnetic anisotropy. A giant Hall resistance ratio up to 69900% and saturation Hall resistance (RSP) up to 2590 mΩ were obtained in CoO/[Pt/Co]4/NiO/[Co/Pt]4/CoO system, which is 302% and 146% larger than that in the structure without CoO layers, respectively. Transmission electron microscopy shows highly textured [Co/Pt]4 multilayers and oxide layers with local epitaxial relations, indicating that the crystallographic structure has significant influence on spin dependent transport properties.

AB - Anomalous Hall effect at room temperature in perpendicular Hall balance with a core structure of [Pt/Co]4/NiO/[Co/Pt]4 has been tuned by functional CoO layers, where [Pt/Co]4 multilayers exhibit perpendicular magnetic anisotropy. A giant Hall resistance ratio up to 69900% and saturation Hall resistance (RSP) up to 2590 mΩ were obtained in CoO/[Pt/Co]4/NiO/[Co/Pt]4/CoO system, which is 302% and 146% larger than that in the structure without CoO layers, respectively. Transmission electron microscopy shows highly textured [Co/Pt]4 multilayers and oxide layers with local epitaxial relations, indicating that the crystallographic structure has significant influence on spin dependent transport properties.

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Tuning giant anomalous Hall resistance ratio in perpendicular Hall balance

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